Hi All,
"update statistics requires table scans internally leaf-level scans of indexes and column scans, may increase I/O contention, may use the CPU to perform sorts, and uses data and procedure caches. Use of these resources can adversely
affect queries running on the server if you run update statistics when usage is high.In addition, some update statistics commands require shared locks, which can block updates.
To reduce I/O contention and resources, run update statistics using a sampling method, which can reduce the I/O and time when your maintenance window is small and the data set is large."
Is the above given information is true/reliable.
Please suggest your views on this.
Regards,
Kalyan
----Learners Curiosity Never Ends----